Emphasis before dither?

wado1942 · 5th October 2010

Just sheer morbid curiosity for this one. I was thinking about the typical noise shaping, like D and F, used for dither and how much more energy is in the extreme high end. This would have to be noticeable on some kinds of material at very low levels. I'm wondering if it'd be possible or advantageous to use emphasis BEFORE dither to help further hide noise for CD releases. All CD players are REQUIRED to allow for de-emphasis right? I've never actually used emphasis on any CDs I've mastered but just got to wonder about this yesterday.

dcollins · 5th October 2010

Quote:

Originally Posted by wado1942

Just sheer morbid curiosity for this one. I was thinking about the typical noise shaping, like D and F, used for dither and how much more energy is in the extreme high end. This would have to be noticeable on some kinds of material at very low levels. I'm wondering if it'd be possible or advantageous to use emphasis BEFORE dither to help further hide noise for CD releases. All CD players are REQUIRED to allow for de-emphasis right? I've never actually used emphasis on any CDs I've mastered but just got to wonder about this yesterday.

Do not use pre-emphasis. It is an obsolete technique and is not supported universally for playback.

DC

5th October 2010	#1
wado1942 Lives for gear Joined: Jan 2009 Location: Boise, Idaho Posts: 2,088 Thread Starter	Emphasis before dither? Just sheer morbid curiosity for this one. I was thinking about the typical noise shaping, like D and F, used for dither and how much more energy is in the extreme high end. This would have to be noticeable on some kinds of material at very low levels. I'm wondering if it'd be possible or advantageous to use emphasis BEFORE dither to help further hide noise for CD releases. All CD players are REQUIRED to allow for de-emphasis right? I've never actually used emphasis on any CDs I've mastered but just got to wonder about this yesterday. __________________ Stephen Baldassarre www.gcmstudio.com

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